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/**
* @file modetransition.c
* This file implements the submode handling component
* of the Mode Control Entity
* <p>
* Copyright © 2004-2011 Nokia Corporation and/or its subsidiary(-ies).
* Copyright (C) 2013-2019 Jolla Ltd.
* <p>
* @author David Weinehall <david.weinehall@nokia.com>
* @author Tapio Rantala <ext-tapio.rantala@nokia.com>
* @author Santtu Lakkala <ext-santtu.1.lakkala@nokia.com>
* @author Irina Bezruk <ext-irina.bezruk@nokia.com>
* @author Simo Piiroinen <simo.piiroinen@jollamobile.com>
*
* mce is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License
* version 2.1 as published by the Free Software Foundation.
*
* mce is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with mce. If not, see <http://www.gnu.org/licenses/>.
*/
#include "modetransition.h"
#include "mce.h"
#include "mce-log.h"
#include "mce-io.h"
#include <unistd.h>
#include <errno.h>
#include <glib/gstdio.h>
/**
* Set the MCE submode flags
*
* @param submode All submodes to set OR:ed together
* @return TRUE on success, FALSE on failure
*/
static gboolean mce_set_submode_int32(const submode_t submode)
{
submode_t old_submode = datapipe_get_gint(submode_pipe);
if (old_submode == submode)
goto EXIT;
mce_log(LL_NOTICE, "submode change: %s",
submode_change_repr(old_submode, submode));
datapipe_exec_full(&submode_pipe, GINT_TO_POINTER(submode));
EXIT:
return TRUE;
}
/**
* Add flags to the MCE submode
*
* @param submode submode(s) to add OR:ed together
* @return TRUE on success, FALSE on failure
*/
gboolean mce_add_submode_int32(const submode_t submode)
{
submode_t old_submode = datapipe_get_gint(submode_pipe);
return mce_set_submode_int32(old_submode | submode);
}
/**
* Remove flags from the MCE submode
*
* @param submode submode(s) to remove OR:ed together
* @return TRUE on success, FALSE on failure
*/
gboolean mce_rem_submode_int32(const submode_t submode)
{
submode_t old_submode = datapipe_get_gint(submode_pipe);
return mce_set_submode_int32(old_submode & ~submode);
}
/**
* Return all set MCE submode flags
*
* @return All set submode flags OR:ed together
*/
submode_t mce_get_submode_int32(void) G_GNUC_PURE;
submode_t mce_get_submode_int32(void)
{
submode_t submode = datapipe_get_gint(submode_pipe);
return submode;
}
/**
* Handle system state change
*
* @param data The system state stored in a pointer
*/
static void system_state_trigger(gconstpointer data)
{
static system_state_t old_system_state = MCE_SYSTEM_STATE_UNDEF;
system_state_t system_state = GPOINTER_TO_INT(data);
switch (system_state) {
case MCE_SYSTEM_STATE_USER:
break;
case MCE_SYSTEM_STATE_SHUTDOWN:
case MCE_SYSTEM_STATE_REBOOT:
/* Actions to perform when shutting down/rebooting
*/
switch( old_system_state ) {
case MCE_SYSTEM_STATE_USER:
case MCE_SYSTEM_STATE_BOOT:
case MCE_SYSTEM_STATE_UNDEF:
case MCE_SYSTEM_STATE_ACTDEAD:
datapipe_exec_full(&led_pattern_deactivate_pipe, MCE_LED_PATTERN_DEVICE_ON);
datapipe_exec_full(&led_pattern_activate_pipe, MCE_LED_PATTERN_POWER_OFF);
break;
default:
break;
}
/* If we're shutting down/rebooting from actdead or
* user mode, ui side will do shutdown animation.
* Unblank the screen to make it visible. */
switch( old_system_state ) {
case MCE_SYSTEM_STATE_USER:
case MCE_SYSTEM_STATE_ACTDEAD:
mce_datapipe_request_display_state(MCE_DISPLAY_ON);
break;
default:
break;
}
break;
case MCE_SYSTEM_STATE_ACTDEAD:
break;
case MCE_SYSTEM_STATE_UNDEF:
goto EXIT;
default:
break;
}
mce_log(LL_DEBUG,
"dsmestate set to: %d (old: %d)",
system_state, old_system_state);
old_system_state = system_state;
EXIT:
return;
}
/** Array of datapipe handlers */
static datapipe_handler_t mce_mode_datapipe_handlers[] =
{
// output triggers
{
.datapipe = &system_state_pipe,
.output_cb = system_state_trigger,
},
// sentinel
{
.datapipe = 0,
}
};
static datapipe_bindings_t mce_mode_datapipe_bindings =
{
.module = "mce_mode",
.handlers = mce_mode_datapipe_handlers,
};
/** Append triggers/filters to datapipes
*/
static void mce_mode_datapipe_init(void)
{
mce_datapipe_init_bindings(&mce_mode_datapipe_bindings);
}
/** Remove triggers/filters from datapipes
*/
static void mce_mode_datapipe_quit(void)
{
mce_datapipe_quit_bindings(&mce_mode_datapipe_bindings);
}
/**
* Init function for the modetransition component
*
* @return TRUE on success, FALSE on failure
*/
gboolean mce_mode_init(void)
{
gboolean status = FALSE;
/* Append triggers/filters to datapipes */
mce_mode_datapipe_init();
/* If the bootup file exists, mce has crashed / restarted;
* since it exists in /var/run it will be removed when we reboot.
*
* If the file doesn't exist, create it to ensure that
* restarting mce doesn't get mce stuck in the transition submode
*/
if (g_access(MCE_BOOTUP_FILENAME, F_OK) == -1) {
if (errno == ENOENT) {
mce_log(LL_DEBUG, "Bootup mode enabled");
mce_add_submode_int32(MCE_SUBMODE_TRANSITION);
errno = 0;
mce_write_string_to_file(MCE_BOOTUP_FILENAME,
ENABLED_STRING);
if (g_access(MALF_FILENAME, F_OK) == 0) {
mce_add_submode_int32(MCE_SUBMODE_MALF);
mce_log(LL_DEBUG, "Malf mode enabled");
if (g_access(MCE_MALF_FILENAME, F_OK) == -1) {
if (errno != ENOENT) {
mce_log(LL_CRIT,
"access() failed: %s. Exiting.",
g_strerror(errno));
goto EXIT;
}
mce_write_string_to_file(MCE_MALF_FILENAME,
ENABLED_STRING);
}
}
} else {
mce_log(LL_CRIT,
"access() failed: %s. Exiting.",
g_strerror(errno));
goto EXIT;
}
} else {
if (g_access(MALF_FILENAME, F_OK) == 0) {
if (g_access(MCE_MALF_FILENAME, F_OK) == 0) {
mce_add_submode_int32(MCE_SUBMODE_MALF);
mce_log(LL_DEBUG, "Malf mode enabled");
}
} else if ((errno == ENOENT) &&
(g_access(MCE_MALF_FILENAME, F_OK) == 0)) {
g_remove(MCE_MALF_FILENAME);
}
}
status = TRUE;
EXIT:
return status;
}
/**
* Exit function for the modetransition component
*
* @todo D-Bus unregistration
*/
void mce_mode_exit(void)
{
/* Remove triggers/filters from datapipes */
mce_mode_datapipe_quit();
return;
}